THC Science

PRKAG3
Identifiers
Aliases	PRKAG3, AMPKG3, protein kinase AMP-activated non-catalytic subunit gamma 3, SMGMQTL
External IDs	MGI: 1891343 HomoloGene: 23006 GeneCards: PRKAG3
Gene location (Human)
Chr.	Chromosome 2 (human)
End	218,832,086 bp
Gene location (Mouse)
Chr.	Chromosome 1 (mouse)
End	74,788,380 bp
RNA expression pattern
	Top expressed in
	Top expressed in
	More reference expression data
	n/a
Gene ontology
Molecular function
Cellular component
Biological process
	Sources:Amigo / QuickGO
Orthologs
	53632
	241113
	ENSG00000115592
	ENSMUSG00000006542
	Q9UGI9
	Q8BGM7
	NM_017431
	NM_153744; NM_153745
	NP_059127
	NP_714966
	Wikidata
View/Edit Human	View/Edit Mouse

5'-AMP-activated protein kinase subunit gamma-3 is an enzyme that in humans is encoded by the PRKAG3 gene.^[5]^[6]

Function[edit]

The protein encoded by this gene is a regulatory subunit of the AMP-activated protein kinase (AMPK). AMPK is a heterotrimer consisting of an alpha catalytic subunit, and non-catalytic beta and gamma subunits. AMPK is an important energy-sensing enzyme that monitors cellular energy status. In response to cellular metabolic stresses, AMPK is activated, and thus phosphorylates and inactivates acetyl-CoA carboxylase (ACC) and beta-hydroxy beta-methylglutaryl-CoA reductase (HMGCR), key enzymes involved in regulating de novo biosynthesis of fatty acid and cholesterol. This subunit is one of the gamma regulatory subunits of AMPK. It is dominantly expressed in skeletal muscle. Studies of the pig counterpart suggest that this subunit may play a key role in the regulation of energy metabolism in skeletal muscle.^[6]

References[edit]

^ ^a ^b ^c GRCh38: Ensembl release 89: ENSG00000115592 – Ensembl, May 2017
^ ^a ^b ^c GRCm38: Ensembl release 89: ENSMUSG00000006542 – Ensembl, May 2017
^ "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
^ "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
^ Milan D, Jeon JT, Looft C, Amarger V, Robic A, Thelander M, Rogel-Gaillard C, Paul S, Iannuccelli N, Rask L, Ronne H, Lundström K, Reinsch N, Gellin J, Kalm E, Roy PL, Chardon P, Andersson L (May 2000). "A mutation in PRKAG3 associated with excess glycogen content in pig skeletal muscle". Science. 288 (5469): 1248–51. Bibcode:2000Sci...288.1248M. doi:10.1126/science.288.5469.1248. PMID 10818001.
^ ^a ^b "Entrez Gene: PRKAG3 protein kinase, AMP-activated, gamma 3 non-catalytic subunit".

Further reading[edit]

Woods A, Cheung PC, Smith FC, Davison MD, Scott J, Beri RK, Carling D (1996). "Characterization of AMP-activated protein kinase beta and gamma subunits. Assembly of the heterotrimeric complex in vitro". J. Biol. Chem. 271 (17): 10282–90. doi:10.1074/jbc.271.48.30517. PMID 8626596.
Cheung PC, Salt IP, Davies SP, Hardie DG, Carling D (2000). "Characterization of AMP-activated protein kinase gamma-subunit isoforms and their role in AMP binding". Biochem. J. 346 Pt 3 (3): 659–69. doi:10.1042/0264-6021:3460659. PMC 1220898. PMID 10698692.
Nielsen JN, Mustard KJ, Graham DA, Yu H, MacDonald CS, Pilegaard H, Goodyear LJ, Hardie DG, Richter EA, Wojtaszewski JF (2003). "5'-AMP-activated protein kinase activity and subunit expression in exercise-trained human skeletal muscle". J. Appl. Physiol. 94 (2): 631–41. doi:10.1152/japplphysiol.00642.2002. PMID 12391032.
Jeon JT, Park EW, Jeon HJ, Kim TH, Lee KT, Cheong IC (2004). "A large-insert porcine library with sevenfold genome coverage: a tool for positional cloning of candidate genes for major quantitative traits". Mol. Cells. 16 (1): 113–6. doi:10.1016/S1016-8478(23)13774-5. PMID 14503854.
Mahlapuu M, Johansson C, Lindgren K, Hjälm G, Barnes BR, Krook A, Zierath JR, Andersson L, Marklund S (2004). "Expression profiling of the gamma-subunit isoforms of AMP-activated protein kinase suggests a major role for gamma3 in white skeletal muscle". Am. J. Physiol. Endocrinol. Metab. 286 (2): E194–200. doi:10.1152/ajpendo.00147.2003. PMID 14559719.
Amarger V, Erlandsson R, Pielberg G, Jeon JT, Andersson L (2003). "Comparative sequence analysis of the PRKAG3 region between human and pig: evolution of repetitive sequences and potential new exons". Cytogenet. Genome Res. 102 (1–4): 163–72. doi:10.1159/000075743. PMID 14970697. S2CID 2854577.
Park HB, Marklund S, Jeon JT, Mickelson JR, Valberg SJ, Sandberg K, Andersson L (2003). "Molecular characterization and mutational screening of the PRKAG3 gene in the horse". Cytogenet. Genome Res. 102 (1–4): 211–16. doi:10.1159/000075751. PMID 14970705. S2CID 6972588.
Barnes BR, Long YC, Steiler TL, Leng Y, Galuska D, Wojtaszewski JF, Andersson L, Zierath JR (2006). "Changes in exercise-induced gene expression in 5'-AMP-activated protein kinase gamma3-null and gamma3 R225Q transgenic mice". Diabetes. 54 (12): 3484–9. doi:10.2337/diabetes.54.12.3484. PMID 16306365.
Lindgren K, Ormestad M, Persson M, Martinsson S, Svensson LT, Mahlapuu M (2007). "Regulation of the muscle-specific AMP-activated protein kinase alpha2beta2gamma3 complexes by AMP and implications of the mutations in the gamma3-subunit for the AMP dependence of the enzyme". FEBS J. 274 (11): 2887–96. doi:10.1111/j.1742-4658.2007.05821.x. PMID 17518971. S2CID 82469680.

[refGRCh38Ensembl-1] GRCh38: Ensembl release 89: ENSG00000115592 – Ensembl, May 2017

[refGRCm38Ensembl-2] GRCm38: Ensembl release 89: ENSMUSG00000006542 – Ensembl, May 2017

[3] "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.

[4] "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.

[pmid10818001-5] Milan D, Jeon JT, Looft C, Amarger V, Robic A, Thelander M, Rogel-Gaillard C, Paul S, Iannuccelli N, Rask L, Ronne H, Lundström K, Reinsch N, Gellin J, Kalm E, Roy PL, Chardon P, Andersson L (May 2000). "A mutation in PRKAG3 associated with excess glycogen content in pig skeletal muscle". Science. 288 (5469): 1248–51. Bibcode:2000Sci...288.1248M. doi:10.1126/science.288.5469.1248. PMID 10818001.

[entrez-6] "Entrez Gene: PRKAG3 protein kinase, AMP-activated, gamma 3 non-catalytic subunit".

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Enzymes
Activity	Active site Binding site Catalytic triad Oxyanion hole Enzyme promiscuity Diffusion-limited enzyme Cofactor Enzyme catalysis
Regulation	Allosteric regulation Cooperativity Enzyme inhibitor Enzyme activator
Classification	EC number Enzyme superfamily Enzyme family List of enzymes
Kinetics	Enzyme kinetics Eadie–Hofstee diagram Hanes–Woolf plot Lineweaver–Burk plot Michaelis–Menten kinetics
Types	EC1 Oxidoreductases (list) EC2 Transferases (list) EC3 Hydrolases (list) EC4 Lyases (list) EC5 Isomerases (list) EC6 Ligases (list) EC7 Translocases (list)

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